linux-kernel - Re: [PATCH] kernel: convert css_set.refcount from atomic_t to refcount

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Message-ID: <20170308224719.GA21117@htj.duckdns.org>
Date:   Wed, 8 Mar 2017 17:47:19 -0500
From:   Tejun Heo <tj@...nel.org>
To:     Elena Reshetova <elena.reshetova@...el.com>
Cc:     linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        Hans Liljestrand <ishkamiel@...il.com>,
        Kees Cook <keescook@...omium.org>,
        David Windsor <dwindsor@...il.com>
Subject: Re: [PATCH] kernel: convert css_set.refcount from atomic_t to
 refcount_t

On Wed, Mar 08, 2017 at 10:00:40AM +0200, Elena Reshetova wrote:
> refcount_t type and corresponding API should be
> used instead of atomic_t when the variable is used as
> a reference counter. This allows to avoid accidental
> refcounter overflows that might lead to use-after-free
> situations.
> 
> Signed-off-by: Elena Reshetova <elena.reshetova@...el.com>
> Signed-off-by: Hans Liljestrand <ishkamiel@...il.com>
> Signed-off-by: Kees Cook <keescook@...omium.org>
> Signed-off-by: David Windsor <dwindsor@...il.com>

Applied to cgroup/for-4.12.

Thanks.

-- 
tejun